Home / 245,926.74-339,380.10-138,498.60

Finding the Fourth Proportional to 245,926.74, 339,380.10 and 138,498.60

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Solution

The fourth proportional to 245,926.74, 339,380.10 and 138,498.60 is: 191,128.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,926.74 : 339,380.10 = 138,498.60 : x
  2. Step 2: Convert to fraction form
    245,926.74/339,380.10 = 138,498.60/x
  3. Step 3: Cross multiply
    245,926.74x = 339,380.10 × 138,498.60
  4. Step 4: Simplify right side
    245,926.74x = 47,003,668,717.86
  5. Step 5: Solve for x
    x = 47,003,668,717.86/245,926.74
  6. Step 6: Final answer
    x = 191,128.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.